🚀SR SOFTWARE ENGINEER WANTED - DRIVE MEANINGFUL IMPACT AT HYPERGROWTH VENTURE🚀

Are you driven by impact, ownership, and a passion for elegant yet efficient systems?

⚙️What You’ll Do⚙️

• Build responsive frontend applications for complex ad operations workflows
• Deploy and maintain production cloud infrastructure (AWS/GCP/Azure) with CI/CD, monitoring, and scaling
• Collaborate on system architecture decisions supporting multiple AI agent integrations

🎮Technical Requirements🎮

Must-Have:

• Languages: JavaScript expertise with modern frameworks (React/Vue/Angular), Python expertise, and experience with at least one low-level language (C, C++, Rust, Zig, or similar)
• Experience: Building large-scale SaaS platforms from scratch; Cloud deployment and DevOps

Preferred Technologies:

• React/Next.js/Vue.js, FastAPI/Django/Flask, Docker/Kubernetes, PostgreSQL/MongoDB/Redis, Temporal/Airflow/Dagster), Kafka/RabbitMQ, AuthN and AuthZ

🧬Who You Are🧬

A driven overachiever with an owner mindset.

You're not just a coder - you're an architect who sees the big picture while mastering the details. You take pride in building high-quality systems that deliver results. You push yourself to solve problems others can't and constantly seek to expand your technical horizons.

💵Comp & Benefits 💵

Salary: 

$120-180k Base depending on experience

• Performance Bonus Eligible

Benefits include:

• Health, Dental, Vision coverage
• Unlimited PTO
• 401k + matching 
• Life Insurance
• Parental Leave
• And more ✨

🛸Why Join Us🛸

We're experiencing exceptional growth in a contracting market. We combine startup agility with established financial stability. You'll work on exciting challenges with a brilliant team of like-minded professionals who value both technical excellence and creative problem-solving. You'll have immediate impact on critical systems and clear paths for professional advancement.

This isn't just another job - it's your chance to build something meaningful with people who are as passionate and talented as you are.

🧩If this sounds like you - we’d love to talk! Apply here >>

The Opportunity

If you've worked alongside hardware teams, you know the damage that results from a missed change request or critical context that was never relayed to the right person. Reflow exists to close that gap. We're building the first AI-powered platform purpose-built for hardware product development, one that listens across the tools teams already use, maintains a structured picture of every program, and proactively coordinates across disciplines when things inevitably change.

This is a ground-floor opportunity for a hands-on backend engineer to build the core services and AI infrastructure powering this platform, with the support of a parent company leading innovation in engineering and manufacturing.

Who We're Looking For

We're seeking a backend engineer who ships reliable, well-designed systems and takes ownership of the services they build. The ideal candidate has production experience with Python, FastAPI, and PostgreSQL, and is comfortable building everything from REST APIs to background task pipelines to AI agent infrastructure. You should already be using AI coding tools like Cursor, Copilot, or Claude to accelerate your work, with excitement about building the backend that powers the first AI-native platform for complex hardware development.

This senior engineer will work alongside our engineering team, AI researchers, and head of product to build the services that turn unstructured inputs (call transcripts, emails, documents, datasheets) into structured engineering artifacts (requirements, project plans, dependencies), orchestrate ambient AI agents for proactive coordination, and serve real-time project intelligence to users. The role is hands-on - you will be coding daily while contributing to system design decisions and helping establish backend engineering best practices as we grow.

What You'll Do

Your day-to-day responsibilities will include:

● Designing and implementing RESTful APIs with OpenAPI specs and auto-generated client SDKs using SQLAlchemy and Postgres

● Developing ingestion pipelines using Celery and Redis that connect to tools teams already use (file storage, messaging, email) and extract structured engineering artifacts from unstructured inputs

● Building and extending agentic AI workflows using LangChain, LangGraph, and related frameworks for structured data extraction, risk detection, dependency analysis, and proactive team coordination

● Integrating LLM APIs (Anthropic Claude, OpenRouter) with streaming (SSE), error handling, and cost optimization

● Deploying and operating services on GCP (Cloud Run, Cloud SQL, Memorystore) with Terraform

● Writing well-tested, maintainable code and participating in code reviews to establish engineering best practices

Technical Requirements

Must Have:

● 5+ years building production backend systems, with 3+ years in Python

● Demonstrated proficiency using AI coding tools (Cursor, Copilot, Claude, etc.) to accelerate development

● Strong experience with FastAPI or similar async Python web frameworks

● Production experience with PostgreSQL, including schema design, migrations, and query optimization

● Hands-on experience with task queues and background processing (Celery, Redis, or similar)

● Understanding of API design, authentication patterns (OIDC/JWT), and service architecture

● Experience with containerized deployments (Docker) and CI/CD pipelines

● Ability to balance rapid iteration with maintainable, well-tested code

Highly Valuable:

● Have worked in early-stage 0 to 1 startup environments

● Production experience integrating LLM APIs (Anthropic, OpenAI, etc.) and building AI-powered features with agent orchestration frameworks (LangChain, LangGraph, or similar)

● Hands-on experience with GCP services (Cloud Run, Cloud SQL, Pub/Sub, Secret Manager) and Infrastructure-as-code experience with Terraform

● Experience with data ingestion pipelines and ETL workflows

● Background in B2B SaaS platforms, project management tools, or workflow automation products

● Understanding of hardware development, engineering workflows, or project management concepts (phases, gates, dependencies)

What We Offer

Real Impact: The opportunity to build purpose-built tooling for an entire industry that has never had it

Customer Access: Direct exposure to hundreds of real hardware projects annually through Re:Build's engineering and manufacturing companies

Technical Growth: Hands-on work with cutting-edge AI technologies solving novel technical challenges

Autonomy: Backed by Re:Build while operating with startup independence

Benefits: Full health/dental/vision, bonus program, generous 401K, paid time off, annual learning stipend

Equity & Growth: Participation in Re:Build's LTIP equity program and opportunity for founder equity in potential spin-out

Compensation & Location

Location: Remote-first, with preference for candidates in Boston, Seattle, Los Angeles, or other cities with Re:Build offices

Compensation: Base salary range of $165,000 to $215,000 with performance bonus and long-term incentive plan offered. Potential equity stake under independent spinout scenario.

Please note this role is restricted to US citizens or lawful permanent residents only due to exposure to export controlled information.

About Re:Build Manufacturing

Re:Build Manufacturing is a growing family of industrial and engineering businesses combining enabling technologies, operational superiority, and strategic M&A to build America's next generation industrial company. At Re:Build we deploy deep expertise in engineering, operations management, and technology to supercharge the performance of our member companies. We harness deep professional expertise and a candid, principled operating culture to drive differentiated outcomes. Ours is a fast-paced environment where individuals can stretch and be challenged to pursue their fullest potential.

Re:Build was founded to pioneer a profitable model for the revitalization of US manufacturing. We've assembled a powerful set of complementary capabilities and lines of business that enable us to pursue a wide range of end markets. Our acquired businesses are grounded in build-to-print and by-the-hour engineering and design services, and we're using their combined

expertise to migrate to increasingly sophisticated program development and production, as well as the generation of our own products. Our unique set of capabilities lend themselves to highly complex systems and products, and we offer customers a range of services including product and systems design, automation, fabrication, assembly, and large volume contract manufacturing. Our customers span a wide array of industries including aerospace, defense, mobility, healthcare, pharma, biotech, clean tech, chemicals, energy, lifestyle, food production, and industrial equipment.

We want to work with people that reflect the communities in which we operate

Re:Build Manufacturing is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, marital status, parental status, cultural background, organizational level, work styles, tenure and life experiences. Or for any other reason.

Re:Build is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need assistance or an accommodation due to a disability, you may contact us at accommodations.ta@ReBuildmanufacturing.com or you may call us at 617.909.6275.

TITLE: Software Engineer

Reporting To: Software Engineer Lead

LOCATION: Marina del Rey, CA (Onsite M - F)

Who The Flip Is Flip?

Ever call your favorite eCommerce brand or healthcare provider, and have a crazy good Voice AI answer? That’s Flip. Hundreds of brands from Under Armour and Tory Burch in retail to Experity and Fast Pace Health in healthcare trust Flip to have millions of phone calls with their customers every month.

We’ve built our company on the idea that the best way to grow is to have a reference list as long as our customer list, and a constant belief that the team is the best thing we’ve built. Both are true today and increasingly so every day.

Many on our team would tell you this is their favorite place they’ve ever worked, and the hardest they’ve ever worked. It’s ideal for people who want to go all-in, do the work, ride the roller coaster, and have a great Flippin time doing it. We’re a small and mighty team of 50 today with offices in NYC, LA, and the UK.

What You’ll Do

At Flip, you'll create user experiences, design and implement new features, and oversee entire pipelines of the Flip assistant. You'll also get deep into the data, interact with our customers, and help shape the direction of the product. We have a few excellent senior engineers already on the team, one of which will become your direct mentor!

You will get to work on intricate Python-based systems that interface with a wide range of external APIs, develop optimized LLM interfaces, handle complex dialogue management and flows, shape conversational workflows, and ensure low-latency, high-availability voice experiences.

Who You Are, As An Engineer

• You’re able to dive into the deep end of a complex Python codebase, and quickly understand what’s going on from the syntax.
• You write clean, pythonic, well-tested, and maintainable code, building off existing functionality appropriately, and adopting established code style.
• You can perform thorough yet swift PR code reviews – for code written by the R&D team and your own.
• You are fast yet meticulous, proactive yet careful, autonomous yet unafraid to ask for help.
• You own your work and take responsibility, fostering trust with all your colleagues. 
• You are able to multitask, actually and literally.
• You constantly monitor performance and can troubleshoot production issues across services and integrations in a timely manner.
• You strive to always push the product forwards, and generally not concerned about theoretical engineering perfection when it doesn’t matter.
• You really, really care about the customer.

Who You Are, As A Person

• You hold a BS in Computer Science, Mathematics or Engineering, or related scientific or technical discipline.
• You are an exceptional programmer, and have a strong proficiency in Python (minimum of 3-5 years): you can write pythonic code and have experience working with asyncio, decorators, advanced class usage (dataclasses, inheritance), an array of modules, and frameworks like FastAPI or Pipecat.
• Familiarity with REST APIs, authentication methods (OAuth2, JWT, Bearer Tokens, etc), and third-party integrations.
• You have a good working knowledge of data analytics and metrics pipelines, and have worked with data analytics systems such as Omni, Tableau, Looker, Grafana, etc.
• You put in the time and dedication to write, iterate, deploy, and monitor work you're proud of.
• You can effectively communicate with non-technical teammates and clients when needed.
• You are eager and willing to support your teammates –  just like they will be with you!

Bonuses

• You are an experienced LLM Prompt Engineer and have fine-tuned or deployed LLMs yourself.
• You have experience with Pipecat, or TTS and STT pipelines in general.
• You have experience working with AWS cloud services, Google Cloud, Kubernetes, and/or Ansible, and know your way around a terminal.
• You have an entrepreneurial drive, and know what it’s really like to work at a successful startup.
• You can work onsite in our NYC/LA office – Partnering closely with the rest of the R&D Team, and Product and Customer Success Managers.

More About Us

• We're international, spanning the US, UK, and Canada
• We’ve raised +$30M to date including our recent $20M Series A - backed by Ridge, Next Coast, ScOp, Bullpen Capital, Data Point and Forum Ventures, as well as founders & executives from Amazon Alexa, Ada, Attentive, and Simon Data
• Comprehensive healthcare and unlimited vacation, including a mandatory half week for everyone over July 4, and a full week off at the end of the year
• In office 5 days/week

#FlippinLegend